EMPLOYEE BENEFITS PLANS (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Summary of net periodic pension cost
Service cost	$ 0.4	$ 0.3	$ 1.3	$ 1.1
Interest cost	0.7	0.7	2.0	2.0
Expected return on plan assets	(0.6)	(0.7)	(1.9)	(2.1)
Amortization of acturial loss	0.2	0	0.7	0
Net periodic benefit cost	$ 0.7	$ 0.3	$ 2.1	$ 1.0